Electric soldering iron



Get. 2, 1928.

B. KALMAR ET AL ELECTRIC SOLDERING IRON Filed Oct. 21, 1927 Patented Oct. 2, 1928.

11*UNITEDSTATES, PATENT] OFFICE.)

nmrALAN 'nALM ARiA p vliuiiao301mm;orgLo ve ISLAKP CITY, new YORK.

E Ectrmo'soLDnBiNe neon.

' a plication and October 21.- 1927. Serial, No. 1 227,637.

This invention relates generallv to electrical devices andhas ,more particular refer- I enceto a novel electric soldering ron. I

J Thelnvent on has'for an ob ectthepro- 5AVlSiOI1 of a device of the class mentioned 1 which 1s of simple, efiicient, durable construction, and which can hemanu'tactured and .sold atareasonable cost.

The invention consists ;1n providing a i;.t 10.. soldering I iron with a removableheating I point ofanyshape or construction, formed 7 a with a reduced rear portionaccommodating heating units properlyinsulated with asbe s- ,tos or nica sheets, the heating point being supported in a socket 1nember,-and 1116211131501 7 normally holding the heating point-against lisplacement being associated with the point and socket member, j i

For further comprehensionvof the inveneo tion and of the ohjectsand advantagesthereof referencewill be had to the following de I scription and accompanying drawings, and

to theyappen ded claims in which the various 1 noveli'eatures of the inventionare more part1cularly setiorth. e

'Reierrmgtothe accompanying drawing forming a material part'ofthis disclosure:

- Fig. 1.is a :perspective view of a device constructed according to this invention- Fig. 2 is a persp ctive view ofarnodified Aldrin ,of this invention.

- F iggli is a fragmentary perspective view of the invention provided with a modified forni of heatingt point. f i i 'Fig.,4 is a. fragmentary faceview of. a modified heating point for use in the invention.

' Fig. 5 is a fragmentary sectionalyiew of,

he device taken as for example oaths line Off Fig. 1.

Fig. 9 is a horizontal sectionalview taken 7 on the line 9 9 of Fig. 5. p r

Fig. 10 is a view similar to Fig. 5 but disclosing a modified form of the inven-- tion.

ally a handle,preferahly made of wood, having its lower end 1OJre1novably arranged candbeing .ofhollow construction. A hollow rod 11.18 attached to the :top' ofthe handle,

and an asbestos insulation. washerfl12is. clamped between the top of thehandlell and a flange 13 integral. with rod 11.

rkctfgniember leissecured to thetopot' rot 11 and is provided: with a. centralopen- 1ng1'15, so that a passage exists from the.

SQCkQlT HlOlHbGIj through the rod 11 and handle 10. A cable 16 with a pair of wires 17, 18, extendsthrough this passage.

heating point 19 is formed. witha reduced end portion 20. A heating unit21 Qis plaCed, on one side ofthe reduced portion 20 and another 22 is placed on the other side.

The heating, point 19 together with the heatunitsiQl, 22 are slippedinto the socket The reference numeral 1.0. indicates gener- ,ineinber 14. The wire117 is connected with i one endof the winding of heating unit 22,

im ale; end of th'e winding being con nected as at .23-to one end of the winding of unit 21. andjtheother endof the winding of unitQl is connectedfto wire 18., A small M asbestos or. mica wedge 24: is placed on one sideof the wire: connection 23, and a larger wedge 25 on theother side .so asyto thoroughly insulate. the said wire connection 23 from contact with the socket. member 14 p orheating point 19.

of top metallic meinher 26, an adjacent mi'ca layer 27, a winding 28 underlaverQ'Y,

Eachli f the heating. units 21,, 9:2, consists andan'asbestos layer 29 beneath the'winding Y28, and t metallic bottom ineinber 29'. next to layer 29, the top member 26 beingffoi 'med with, flaps 30v bent overagainst the bottom member :29. hold the various parts together, 5

The heating semi-L19 m beamed with" cavities 31 on the sides thereof so that some orippin tool mat be enga ed therewith for a g g pulling the heating point out of'the device. The heating point 19 may be replaced hv heating points of different shapes. such as 19 shown in Fig. 4 or 19 shown in Fig. 3, or any other shapes adapted for diflerent kinds of work.

The heating units 21 and 2-2 are provided with side projections 32 engaged in recesses 33 in the socket member 14. The wedge 25 engages in grooves 34 in the sides of the heating units and a Wedge 25' engages in grooves 34. in the same sides of the heating units but at the other ends, these wedges acting to maintain the heating units with the projections 32 engaged in the recesses 33 so that the heating units will not be with the vertical grooves in which the wedges engage may be seen. In the device these heating units are parallel as seen in Fig. 9.

The modification of the invention illustrated in Fig. 10 discloses a means for nor mally securing the heating point 19 against withdra *al consisting of levers 3G hinged intermediate of their ends in the socket member 1st, one end of each lever being engageable in apertures 37 inthe heating point 19 and the other end of each lever engages a serrated friction surface 38 to hold the levers as positioned. which may be accomplished by inserting a tool through apertures 39 in the socket member 14 and engaging a threaded aperture 40 in each of the levers.

In Fig. 2 the socket member 14' is shown in a horizontal position.

It is to be understood that in ourelectric iron the heat is concentrated toward the heating point since the asbestos plate 27 is a comparatively better heat insulator than the mica plate 29, thus preventing the heat to escape through the socket member 14.

While we have illustrated and described our invention with some degree of particularity. it will be understood that the de vice is, nevertheless, susceptible ofconsiderable modification therein, e therefore, reserve the privilege otresorting to all such changes as may be fairly embodied within the spirit and scope of the invention as claimed.

Having thus described our invention what we claim as new and desire to secure by United States Letters Patent is: v

1. The combination with an electric soldering iron having a socket member, heating units therein. and a heating point slidably arranged between the units, of projections from the heating units engaging in recesses in the socket member, and wedges slidable in grooves in the heating units to force the heating units against the socket member so that the projections are forced to stay in engagement with the recesses.

2. The combination with an electric soldering iron having a socket member, heating units therein, and a heating point slidably arranged between the units. of projections from the heating units engaging in recesses in the socket member, and wedges slidable in grooves in the heating units to force the heating units against the socket member so that the projections are forced to stay in engagement with the recesses, and means for normally holding the heating point against being drawn out.

3. The combination with an electric soldering iron having a socket member, heating units thereiinand a heating point slidably arranged between the units, of projections from the heating units engaging in recesses in the socket member, and wedges slidable in grooves in the heating units to force the heating units against the socket member so that the projections are forced to stay in engagement with the recesses, and means for normally holding the heating point against being drawn out, said means being manually releaseable.

4,. The combination with an electric soldering iron having a socket member, heating units therein, and a heating point slidably arranged between the units, of projections from the heating units engaging in recesses in the socket member, and wedges slidable in grooves in the heating units to force the heating units against the socket member so that the projections are forced to stay in engagement with the recesses, and means for normally holding the heating point against being drawn out, consisting of levers hinged intermediate of their ends in the socket member, end of each lever being engagcable in apertures in the heating point, and the other ends being frictionally held, and'exposed for manual moving.

In testimony whereof we have affixed our signatures.

BERTALAN KALMAR. MANO KOLLIN. 

